Theory of the Fallacy Spectrum

The theory that fallacies exist on a spectrum, not as a binary category of "fallacious" vs. "valid." The Fallacy Spectrum recognizes that what counts as a fallacy depends on context, purpose, and degree. An argument that's clearly fallacious in a formal debate may be reasonable in everyday conversation; a claim that's somewhat fallacious may still point toward truth; a fallacy that's harmless is different from one that's destructive. The spectrum allows for distinguishing between different kinds and degrees of fallaciousness, for evaluating arguments rather than just labeling them. A hasty generalization from limited data is different from one with no data; an ad hominem that's relevant is different from one that's pure distraction. The Theory of the Fallacy Spectrum calls for mapping where arguments fall on multiple axes of fallaciousness.

Theory of the Fallacy Spectrum Example: "He called every argument he disagreed with 'fallacious.' The Theory of the Fallacy Spectrum showed why that was itself fallacious: fallacies come in degrees. A weak analogy is less fallacious than a complete non sequitur; a relevant ad hominem is less fallacious than a pure attack. The spectrum demanded actual evaluation, not just labeling."

Theory of the Fallacy Spectrum by Dumu The Void March 7, 2026